Search Publications
Observations of edge-on protoplanetary disks with ALMA. I. Results from continuum data
Pinte, C.; Ménard, F.; Duchêne, G. +15 more
Aims: We aim to study vertical settling and radial drift of dust in protoplanetary disks from a different perspective: an edge-on view. An estimation of the amplitude of settling and drift is highly relevant to understanding planet formation.
Methods: We analyze a sample of 12 HST-selected edge-on protoplanetary disks (i.e., seen with hi…
Quasars as standard candles. III. Validation of a new sample for cosmological studies
Marconi, A.; Vignali, C.; Gilli, R. +15 more
We present a new catalogue of ∼2400 optically selected quasars with spectroscopic redshifts and X-ray observations from either Chandra or XMM-Newton. The sample can be used to investigate the non-linear relation between the ultraviolet (UV) and X-ray luminosity of quasars as well as to build a Hubble diagram up to a redshift of z ∼ 7.5. We selecte…
Metis: the Solar Orbiter visible light and ultraviolet coronal imager
Telloni, Daniele; Susino, Roberto; Antonucci, Ester +100 more
Aims: Metis is the first solar coronagraph designed for a space mission and is capable of performing simultaneous imaging of the off-limb solar corona in both visible and UV light. The observations obtained with Metis aboard the Solar Orbiter ESA-NASA observatory will enable us to diagnose, with unprecedented temporal coverage and spatial res…
X-ray quasi-periodic eruptions from the galactic nucleus of RX J1301.9+2747
Miniutti, Giovanni; Giustini, Margherita; Saxton, Richard D.
Following the recent discovery of X-ray quasi-periodic eruptions (QPEs) coming from the nucleus of the galaxy GSN 069, here we report on the detection of QPEs in the active galaxy named RX J1301.9+2747. QPEs are rapid and recurrent increases of the X-ray count-rate by more than one order of magnitude with respect to a stable quiescent level. Durin…
Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS). IV. A spectral inventory of atoms and molecules in the high-resolution transmission spectrum of WASP-121 b
Heng, K.; Ségransan, D.; Ehrenreich, D. +22 more
Context. WASP-121 b is a hot Jupiter that was recently found to possess rich emission (day side) and transmission (limb) spectra, suggestive of the presence of a multitude of chemical species in the atmosphere.
Aims: We survey the transmission spectrum of WASP-121 b for line-absorption by metals and molecules at high spectral resolution and e…
Resolving nearby dust clouds
Enßlin, T. A.; Leike, R. H.; Glatzle, M.
Aims: Mapping the interstellar medium in 3D provides a wealth of insights into its inner working. The Milky Way is the only galaxy for which detailed 3D mapping can be achieved in principle. In this paper, we reconstruct the dust density in and around the local super-bubble.
Methods: The combined data from surveys such as Gaia, 2MASS, PA…
Molecular outflows in local galaxies: Method comparison and a role of intermittent AGN driving
Lutz, D.; Genzel, R.; Maiolino, R. +19 more
We report new detections and limits from a NOEMA and ALMA CO(1-0) search for molecular outflows in 13 local galaxies with high far-infrared surface brightness, and combine these with local universe CO outflow results from the literature. The CO line ratios and spatial outflow structure of our targets provide some constraints on the conversion step…
Constraining the masses of microlensing black holes and the mass gap with Gaia DR2
Wyrzykowski, Łukasz; Mandel, Ilya
Context. Gravitational microlensing is sensitive to compact-object lenses in the Milky Way, including white dwarfs, neutron stars, or black holes, and could potentially probe a wide range of stellar-remnant masses. However, the mass of the lens can be determined only in very limited cases, due to missing information on both source and lens distanc…
The "hidden" companion in LB-1 unveiled by spectral disentangling
Shenar, T.; Sana, H.; Hawcroft, C. +9 more
Context. The intriguing binary
Peering into the formation history of β Pictoris b with VLTI/GRAVITY long-baseline interferometry
Förster Schreiber, N. M.; Genzel, R.; Sturm, E. +65 more
Context. β Pictoris is arguably one of the most studied stellar systems outside of our own. Some 30 yr of observations have revealed a highly-structured circumstellar disk, with rings, belts, and a giant planet: β Pictoris b. However very little is known about how this system came into being.
Aims: Our objective is to estimate the C/O ratio i…